ZyXEL Communications IP PBX X6004 - Manual (Page 204)

Chapter 11 DSP Management
X6004 User’s Guide
204
DSP Management
The X6004 automatically detects the number of DSP channels available for
processing telephone conversations. The number of available DSP channels is
based on the DSP modules installed on the X6004.
The X6004 automatically assigns DSP channels to service the analog phone
connections (FXS ports) available on the X6004. It also automatically assigns DSP
channels to the analog connections to the PSTN (FXO ports).
The remaining DSP channels is are shared among all services which require DSP
resources on the X6004.
11.1.3 Before You Begin
Consider the following when making decisions on purchasing additional DSP
modules or assigning the DSP channels on the X6004:
• A typical conversation uses two channels.
• A conference call uses one channel per participant.
• Unassigned DSP channels are shared among all services which require DSP
resources.
11.2 Installing and Removing DSP Modules
This section describes how to install and remove the X6004’s DSP modules.
11.2.1 How to Install a DSP Module
Take the following steps to install a second Digital Signal Processor in your X6004.
1
Ensure the power is off and all cables are disconnected. Lay the X6004 upside
down on a flat, dry surface. The DSP hatch is located on the base of the X6004.
2
Unscrew and remove the DSP hatch screw.
3
Remove the DSP hatch cover.
4
Insert the DSP module’s contacts into the connector socket at an angle, as shown
in the figure.